dlls/dwrite/dwrite_private.h

   1 /*
   2  * Copyright 2012 Nikolay Sivov for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "dwrite_2.h"
  20 #include "d2d1.h"
  21
  22 #include "wine/debug.h"
  23 #include "wine/unicode.h"
  24
  25 static inline void *heap_alloc(size_t len)
  26 {
  27     return HeapAlloc(GetProcessHeap(), 0, len);
  28 }
  29
  30 static inline void *heap_alloc_zero(size_t len)
  31 {
  32     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
  33 }
  34
  35 static inline void *heap_realloc(void *mem, size_t len)
  36 {
  37     return HeapReAlloc(GetProcessHeap(), 0, mem, len);
  38 }
  39
  40 static inline void *heap_realloc_zero(void *mem, size_t len)
  41 {
  42     return HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, mem, len);
  43 }
  44
  45 static inline BOOL heap_free(void *mem)
  46 {
  47     return HeapFree(GetProcessHeap(), 0, mem);
  48 }
  49
  50 static inline LPWSTR heap_strdupW(const WCHAR *str)
  51 {
  52     LPWSTR ret = NULL;
  53
  54     if(str) {
  55         DWORD size;
  56
  57         size = (strlenW(str)+1)*sizeof(WCHAR);
  58         ret = heap_alloc(size);
  59         if(ret)
  60             memcpy(ret, str, size);
  61     }
  62
  63     return ret;
  64 }
  65
  66 static inline LPWSTR heap_strdupnW(const WCHAR *str, UINT32 len)
  67 {
  68     WCHAR *ret = NULL;
  69
  70     if (len)
  71     {
  72         ret = heap_alloc((len+1)*sizeof(WCHAR));
  73         if(ret)
  74         {
  75             memcpy(ret, str, len*sizeof(WCHAR));
  76             ret[len] = 0;
  77         }
  78     }
  79
  80     return ret;
  81 }
  82
  83 static inline const char *debugstr_range(const DWRITE_TEXT_RANGE *range)
  84 {
  85     return wine_dbg_sprintf("%u:%u", range->startPosition, range->length);
  86 }
  87
  88 static inline unsigned short get_table_entry(const unsigned short *table, WCHAR ch)
  89 {
  90     return table[table[table[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0xf)];
  91 }
  92
  93 extern HRESULT convert_fontface_to_logfont(IDWriteFontFace*, LOGFONTW*) DECLSPEC_HIDDEN;
  94 extern HRESULT create_numbersubstitution(DWRITE_NUMBER_SUBSTITUTION_METHOD,const WCHAR *locale,BOOL,IDWriteNumberSubstitution**) DECLSPEC_HIDDEN;
  95 extern HRESULT create_textformat(const WCHAR*,IDWriteFontCollection*,DWRITE_FONT_WEIGHT,DWRITE_FONT_STYLE,DWRITE_FONT_STRETCH,
  96                                  FLOAT,const WCHAR*,IDWriteTextFormat**) DECLSPEC_HIDDEN;
  97 extern HRESULT create_textlayout(const WCHAR*,UINT32,IDWriteTextFormat*,FLOAT,FLOAT,IDWriteTextLayout**) DECLSPEC_HIDDEN;
  98 extern HRESULT create_trimmingsign(IDWriteInlineObject**) DECLSPEC_HIDDEN;
  99 extern HRESULT create_typography(IDWriteTypography**) DECLSPEC_HIDDEN;
 100 extern HRESULT create_gdiinterop(IDWriteFactory2*,IDWriteGdiInterop**) DECLSPEC_HIDDEN;
 101 extern void    release_gdiinterop(IDWriteGdiInterop*) DECLSPEC_HIDDEN;
 102 extern HRESULT create_localizedstrings(IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
 103 extern HRESULT add_localizedstring(IDWriteLocalizedStrings*,const WCHAR*,const WCHAR*) DECLSPEC_HIDDEN;
 104 extern HRESULT clone_localizedstring(IDWriteLocalizedStrings *iface, IDWriteLocalizedStrings **strings) DECLSPEC_HIDDEN;
 105 extern HRESULT get_system_fontcollection(IDWriteFactory2*,IDWriteFontCollection**) DECLSPEC_HIDDEN;
 106 extern HRESULT get_eudc_fontcollection(IDWriteFactory2*,IDWriteFontCollection**) DECLSPEC_HIDDEN;
 107 extern HRESULT get_textanalyzer(IDWriteTextAnalyzer**) DECLSPEC_HIDDEN;
 108 extern HRESULT create_font_file(IDWriteFontFileLoader *loader, const void *reference_key, UINT32 key_size, IDWriteFontFile **font_file) DECLSPEC_HIDDEN;
 109 extern HRESULT create_localfontfileloader(IDWriteLocalFontFileLoader** iface) DECLSPEC_HIDDEN;
 110 extern HRESULT create_fontface(DWRITE_FONT_FACE_TYPE,UINT32,IDWriteFontFile* const*,UINT32,DWRITE_FONT_SIMULATIONS,IDWriteFontFace2**) DECLSPEC_HIDDEN;
 111 extern HRESULT create_font_collection(IDWriteFactory2*,IDWriteFontFileEnumerator*,BOOL,IDWriteFontCollection**) DECLSPEC_HIDDEN;
 112 extern BOOL    is_system_collection(IDWriteFontCollection*) DECLSPEC_HIDDEN;
 113 extern HRESULT get_local_refkey(const WCHAR*,const FILETIME*,void**,UINT32*) DECLSPEC_HIDDEN;
 114 extern HRESULT get_filestream_from_file(IDWriteFontFile*,IDWriteFontFileStream**) DECLSPEC_HIDDEN;
 115 extern BOOL    is_face_type_supported(DWRITE_FONT_FACE_TYPE) DECLSPEC_HIDDEN;
 116
 117 /* Opentype font table functions */
 118 extern HRESULT opentype_analyze_font(IDWriteFontFileStream*,UINT32*,DWRITE_FONT_FILE_TYPE*,DWRITE_FONT_FACE_TYPE*,BOOL*) DECLSPEC_HIDDEN;
 119 extern HRESULT opentype_get_font_table(IDWriteFontFileStream*,DWRITE_FONT_FACE_TYPE,UINT32,UINT32,const void**,void**,UINT32*,BOOL*) DECLSPEC_HIDDEN;
 120 extern void opentype_cmap_get_glyphindex(void*,UINT32,UINT16*) DECLSPEC_HIDDEN;
 121 extern HRESULT opentype_cmap_get_unicode_ranges(void*,UINT32,DWRITE_UNICODE_RANGE*,UINT32*) DECLSPEC_HIDDEN;
 122 extern void opentype_get_font_properties(const void*,const void*,DWRITE_FONT_STRETCH*,DWRITE_FONT_WEIGHT*,DWRITE_FONT_STYLE*) DECLSPEC_HIDDEN;
 123 extern void opentype_get_font_metrics(IDWriteFontFileStream*,DWRITE_FONT_FACE_TYPE,UINT32,DWRITE_FONT_METRICS1*) DECLSPEC_HIDDEN;
 124 extern HRESULT opentype_get_font_strings_from_id(const void*,DWRITE_INFORMATIONAL_STRING_ID,IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
 125
 126 /* BiDi helpers */
 127 extern HRESULT bidi_computelevels(const WCHAR*,UINT32,UINT8,UINT8*,UINT8*) DECLSPEC_HIDDEN;
 128 extern WCHAR bidi_get_mirrored_char(WCHAR) DECLSPEC_HIDDEN;
 129
 130 enum outline_point_tag {
 131     OUTLINE_POINT_START  = 1 << 0,
 132     OUTLINE_POINT_END    = 1 << 1,
 133     OUTLINE_POINT_BEZIER = 1 << 2,
 134     OUTLINE_POINT_LINE   = 1 << 3
 135 };
 136
 137 struct glyph_outline {
 138     D2D1_POINT_2F *points;
 139     UINT8 *tags;
 140     UINT16 count;
 141     FLOAT  advance;
 142 };
 143
 144 extern HRESULT new_glyph_outline(UINT32,struct glyph_outline**) DECLSPEC_HIDDEN;
 145 extern void    free_glyph_outline(struct glyph_outline*) DECLSPEC_HIDDEN;
 146
 147 /* FreeType integration */
 148 extern BOOL init_freetype(void) DECLSPEC_HIDDEN;
 149 extern void release_freetype(void) DECLSPEC_HIDDEN;
 150 extern HRESULT freetype_get_design_glyph_metrics(IDWriteFontFace2*,UINT16,UINT16,DWRITE_GLYPH_METRICS*) DECLSPEC_HIDDEN;
 151 extern void freetype_notify_cacheremove(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 152 extern BOOL freetype_is_monospaced(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 153 extern HRESULT freetype_get_glyph_outline(IDWriteFontFace2*,FLOAT,UINT16,USHORT,struct glyph_outline**) DECLSPEC_HIDDEN;
 154
 155 /* Glyph shaping */
 156 enum SCRIPT_JUSTIFY
 157 {
 158     SCRIPT_JUSTIFY_NONE,
 159     SCRIPT_JUSTIFY_ARABIC_BLANK,
 160     SCRIPT_JUSTIFY_CHARACTER,
 161     SCRIPT_JUSTIFY_RESERVED1,
 162     SCRIPT_JUSTIFY_BLANK,
 163     SCRIPT_JUSTIFY_RESERVED2,
 164     SCRIPT_JUSTIFY_RESERVED3,
 165     SCRIPT_JUSTIFY_ARABIC_NORMAL,
 166     SCRIPT_JUSTIFY_ARABIC_KASHIDA,
 167     SCRIPT_JUSTIFY_ARABIC_ALEF,
 168     SCRIPT_JUSTIFY_ARABIC_HA,
 169     SCRIPT_JUSTIFY_ARABIC_RA,
 170     SCRIPT_JUSTIFY_ARABIC_BA,
 171     SCRIPT_JUSTIFY_ARABIC_BARA,
 172     SCRIPT_JUSTIFY_ARABIC_SEEN,
 173     SCRIPT_JUSTIFY_ARABIC_SEEN_M
 174 };
 175
 176 struct scriptshaping_cache;
 177
 178 struct scriptshaping_context
 179 {
 180     struct scriptshaping_cache *cache;
 181     UINT32 language_tag;
 182
 183     const WCHAR *text;
 184     UINT32 length;
 185     BOOL is_rtl;
 186
 187     UINT32 max_glyph_count;
 188 };
 189
 190 extern HRESULT create_scriptshaping_cache(IDWriteFontFace*,struct scriptshaping_cache**) DECLSPEC_HIDDEN;
 191 extern void release_scriptshaping_cache(struct scriptshaping_cache*) DECLSPEC_HIDDEN;
 192
 193 struct scriptshaping_ops
 194 {
 195     HRESULT (*contextual_shaping)(struct scriptshaping_context *context, UINT16 *clustermap, UINT16 *glyph_indices, UINT32* actual_glyph_count);
 196     HRESULT (*set_text_glyphs_props)(struct scriptshaping_context *context, UINT16 *clustermap, UINT16 *glyph_indices,
 197                                      UINT32 glyphcount, DWRITE_SHAPING_TEXT_PROPERTIES *text_props, DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props);
 198 };
 199
 200 extern const struct scriptshaping_ops default_shaping_ops DECLSPEC_HIDDEN;
 201 extern const struct scriptshaping_ops latn_shaping_ops DECLSPEC_HIDDEN;